Display machine



0. F. BALTZLEY.

DISPLAY MACHINE.

. APPLICATION FILED SEPT. 25,1920.

Patented Mar; 14, 1922.

5 SHEETSSHEET I.

l I I I l I IIIIIIIIIL firm wag 0. F. BALTZLEY.

DISPLAY MACHINE.

APPLICATION FILED SEPT. 25, 1920.

1 A09, 5 1 7 Patented Mar. 14, 1922.

5 SHEETS-SHEET 2.

JMW

alumna 4;

O. F. BALTZLEY. DISPLAY MACHINE.

APPLlCATlON FILED SEPT. 25,1920.

Patented Mar. 14, 1922.

5 SHEETS-SHEET 3.

O. F. BALTZLEY.

DISPLAY MACHINE.

APPLICATION FlLED'SEPI. 25.1920.

1 A09 5 7 Patented Mar. 14, 1922.

5 SHEETSSHET 4.

0. F. BALTZLEY.

DI SPLAY MACHINE. APPLICATION FILEDVSEPT. 25,1920.

Patented Mar. 14, 1922.

5 SHEETSSHEET 5- I OBI-ENE. emanates, on 'nnenitsrown,MARYLAND;

' :oIsr'nAY eaning eeann.

v Specification of Letters Patent.

I; Patented MEa 14 Application filed se tem e'res; ieo. Serial in. 412,6 1,

play Machines, of which the following is a machine for displaying or exhibiting signs,

advertisements, pictures and other objects in succession' -and in substantially automatic manner,-in such way that a single person or a number of persons may use the machine for display of exhibition purposes either as owner-or lessee or'sp'ace renter.

The invention consistsot a frame having" a storage rack on which are movably mount-1 ed any: number of display frames containing signs, advertisements, pictures or other obiects, and a" vertically reciprocating earriage, combined with transferring mochanisms, parts of which. are elementsot the carriage andthe remainder Coordinated with its movements, by which a display frame is takenfrom the storage rack andmoved to a transfer rack from which'it is moved into position. to be displayed or" exhibited for a, predetermined time, and thereafteifdis placed and carried to the opposite end of the rack soasi to'be in p'osition' to be'ex hibited or displayed again when other display frames on the rack have been taken one by one and moved into displayingor exhibiting position, as I will proceed now to explain and finally claim. v

In the accompanying drawings illustrat.-' ing the invention, in the several figures of which like parts are similarly designated,

Figure 1 is'a front elevationfof themachine 1 without the casing that may be employed to enclose it- Fig; 2' is a rear elevation, the motor being omitted. Fig. 3 is a sideeleva tion. Fig. at is astrbstantially vertical centralsectiomwith parts broken away to' 'more lully show the carriage member; Fig. 5 is a. top planview. Fig. 6 isla longitudinal section,on a larger scale, showing, part of the operating mechanism. Fig. 7 is a p erspective view of the upper front portion'of the frame, showing a portion of the trans fer mechanism. Fig. 8 is a perspective view of the front corner or angle of the upper portion of'the carriage Fig. 9 is a perspective view of the corner or anglefof the rear portion. of the carriage; both: Figs. 8

and {9 showing portions joffthej tiransfer niechanisml' Fig. 10"1s a perspective view of the carriage members, detached, With-twQQ display -frames thereon shown' 'in dotted lines and portions of the uprights er the frame also" shown in dottedf.lines.v Fig; 11'

FigzlQis an'elevation ofthe wiper camand' crank arin for controllingthe mo vement'of the rock levers for shifting the display frames on the? storageracknFig- 13 is an elevation oi' the notched cam, with itscrank' arnr partly in section, for preventing overelevation of the scroll cam "with its crank arm'ifoifcontrolling the. effective" movement i of: the rockshaftl F151 15 is anye'leva'tl'on ot the cam and itsfc'rank arm for controlllng" the movement oii th'e roclt levers-for shifting the display frames from the rear tothef front of machine on thetrans'ter rack for display purposesl I A base is provided" upon which "are rig an elected; h eprigh and 5, L shapedfinj crossssection, whichare connected by tie-rods orgrbolts "6 and7, and

constitute the transfer rack herein referred to, About the center of the uprights'are fixed the rightand' left pieces 8 amt-9,3180.

L. shaped. in crossesection, and-jointly'forini'ng a storage'racltfor supporting in apend,

.is an elevation: and partial section of the escapernent disk for operat ngv tl1e'fcarr1age.j

r I v cs2 and-3, and these uprights are provided their uppergends; V with-[similar right jandileft crosspieces ant way the display names 10,.said framesf havin at their upper ends thefllaterally' projecting trunnions 11 'which. engage the rack menibersj These frames receive the thingt'o be exhibited or displayed, such as an advertisement, sign, picture, 'orether objest... These rack me'mbe fs 8f andl9 arej'ar-1 -1'an ged on'the' 1nners1des of the uprightsfl trams-transferring carriage12-,.;shown detached in Fig; 1Q,'; is m'ounted't'o travel up anddown'the' uprights, and consists of like cross pieces l3 fix ed to and carried "by down-j \vardly extendingislidesfl t, arranged parallelwithjtheupi'i-gl'its,,all' mounted upon the outside 0t the uprights. v Said slides 14 upper "and lower ends respectively to em-;

brace the uprights and connect the carriage 3 have flanged connectorsfljohnd15 at; their past the storage rack, in both its up and its down travel. carriage have their rear ends 16 extended toward one another 'and these ends are .pro-

vided with inwardly projecting hooks 17 adapted to take the display frames one by.

' are arranged ontheedgcs ofthe cut-away portions and extendinwardly and point up- 'wardly. Next'to the hooks are the projec tions 23 which also' extend inwardly and serve as stops to prevent the lateral dislocation o the display trames, as they are taken from the display mechanism by the carriage and returnedjto the rack.

he base iris provided with and 26, in which is supported a shaft 27,

having the cranks 28 to which are pinned the lower ends of rods 29, the upper ends of said rods being pinned to'the carriage slides .14 by means of which the carriage is given a vertical reciprocation on the uprights, 2" and V to effect the removal'of the display frames one by one fromthe storage rack to the transfer rack. Motion may be imparted to the shaft 27 by any suitable means, and as hereinshown, these means comprise an elec-,

tric rnotor 30,see Fig. 5-; having a shaft 31 on which is a worm 32 which engages a worm-wheel 33, which is keyed to a sleeve 34 loosely mounted on the shaft Fixed to this sleeve is a disk 35 having a peripheral notch 36 and a laterally projecting pin 87,

and fixed to the shattQT is an arm 38 which carr es an L-shaped latch 39 normally pressed toward the disk 35 by a spring 44), so ,as to engage the notch 36 in'said disk. This latch 1s normally pressed away .13, L i .4

iroin the CllSh by means of a latch lever 41 p voted on an extension 42 of the bracket 25 andheld down by a spring 43- and having one corner 4A beveled. This latch leverhas a depending arm 45 on which is axiallymjounted a star-wheel, 4C6, hereinafter termed the timing-wheehfand having any desired number of notches 47 of equal depth and one or more notches 4L8 ofless depth, said timingwheel being so'arranged relatively to the disk 35 as to turn in the path of movement of the pin 37 on said disk.

As will be observedjthe motor turns the worm-wheel and consequently the" sleeve 3% and the disk 35 continuously Without turning the shaft 27. Tu the rotation of the The cross-pieces 13 of the bearings 24:,

disk 35 its pin 3? W111 Va rant turn the timing-wheel on its axis without affecting has been turnegl so as to bring the shallow notch 48 into engagement with the pin 37 then by reason of the fact. that said notch is shorter than the notches 47, the timing-wheel V the latch lever, but when the timing-Wheel will be lifted and thereby raise the latch lever so that it will release the latchandpermit'its spring 40 to force it down into" engagement with the notch in the disk 35" and thereby couplethe shaft 27 with the sleeve'34 and the worm-gearing and cause said shaft to turn; This turn ng oii' t he shaft causes it to operate the crank arms 28 and effect firstthe complete upward and n then the complete downward movement of the carriage on the uprights 2f At'thelcompletion of this; movement the pin 37 will engage one of the longer notches of the timing-wheel and tliedatcli lever willbe drawn toward the latch and its b eveledend 4:4: will engage the upright portion ofsaid latch and lift it out of contact withthe notch in the disk and thereby uncoup'lethe arm 38 and again permit the disk torun sort of escap ement v v I v ts, the carriage uses its hooks 17 will en; gage the trunnions 110i the d1splay frame 1-0 at the rear er the machine and carry up said frame insideof' the pendant prqectrons 49 of the transfer rack back of the latches- 50 which are pivotedto lugsbl depending from said rack and are held-1n engaging po- 'fi'ee with its sleeve 34 on the shaft 27 without'turning sa dshaft; The timingwheel, and tits cooperative adjuncts const tute a sition by springs 52. vDuring the upward movement'of the carriage the rock lever's153 pivoted at 54 to the uprights havebeen moved over. to thefbaclr of the machinefas;

indicated by dotted lines in Fig. 3, so as to be in position to engage the trunnions, of the display frame thus elevated, and thereafter these levers 53 are moved; toward the front of the machine and carry the display frame on the ledges :55 of the ti'ansteii'aclc toward i 57 pivoted'at 58 to lugs 59 on the transfer 'raclt'and held elevated by the spring 60,so.

that their cam-surfaces 61 will be in the path of movement of thetrunnions; These ,the front of the machine and underneath the a guards 56 and into contactwith cam'levers levers, .57 havethe off-set ends 62 provided with notches 63 to engage projections 63% on trip levers 65,, which are pivoted to lug'sf66 depending from the transfer rack and connected by'the springs with the leversn57 so vas to draw them away from said levers;

whenreleased by the depression of saidle.

vers occasioned by the crossing of the trun nions of the moving display frame over said levers 57. The tripping of the levers 65 is effected by'the inwardly extending projections 21 01 the carriage'as'they come oppotil site, and when so tripped they release the displayed frame and are held setby the levers 57. The previously positioned display frame has been supported in .such display position against the pendant projection 49", Figs. 1, 3, 4 and 7, by means of the surfaces 67 of levers and therefore as the said previously exhibited display frame is released, it falls upon the hooks 22, and then upon the descent of the carriage it is carried to the level of the storage rack and deposited upon the lugs 68 of rock levers 69 which transfer it to the storage rack and thereafter in their rearward movement, move the frame up against the series of frames on said rack so as to be in position to beagain displayed or exhibited in turn. In the movement of the carriage and the consequent movement of the rock levers 69, thetips70 of said rock levers come beneath lugs-71 on the shutter 72, but in the previously described movement of these rock levers to movethe previously displayed frame to the rear, said rock levers escape from beneath these lugs 71 and release the shutter so that it drops to the bottom ofthe machine and thus permits the display or exhibition of the frame that had been moved into display or exhibiting position. The thus dropped shutter has its lugs 73 extended sufficiently far to'come into contact with the projections 20 on the carriage so as to be in position to be raised to cover the exhibiting opening at the next upward movement of the carriage.

The shutter has the lugs 73'at its upper end which are connected to endless belts 74 running over upper pulleys 7 5 and lower pulleys 76 on the machine frame, and provided with counterweightsT'Tso as to guide and regulate the movement-of the shutter.

Tension springs 77* may be interposed in the belts, or, as shown, may connect the belts and their counterweights. The bottomof the shutter when the parts arein display position may rest upon buffers 78 of'any suitable construct-ion, here shown as rubber buffers, mounted on pins 79, erected on the extensions 80 of the brackets 81 which are secured to the uprights 2 and Any suitable bufl'ers may be used for this purpose. On these extensions are also mounted rods 82 secured at their tops on extensions 83 of the transfer rack andthe-lugs 71 and 73 of the shutter are provided with holes through which these rods extend, so that the said rods serve as guides or ways for the movements of the shutter.

I have thus described the general opera tion of taking a display frame from the storage rack, carrying it up to the top of the machine frame and moving it across the transfer rack into display position while the display opening is covered with the shutter, then dropping the shutter so as to display the frame that has been put into display or exhibiting position, and then closing the display opening by raising the shutter, and displacing the displayed frame while another display frame is brought into position for display, and will now proceed to describe the mechanism for controlling thetransfer means. A rock shaft 84 is mounted in the brackets 81, and-has fast on it the rock levers 69. On this rock shaft is fixed a crank arm 85 projecting toward the shaft 27 and carrying a roller 86 in contact with a wiper cam 87 fast to shaft 27. Near the opposite'end of the shaft 84 is a crank arm 88 loosely mounted on said shaft and provided at its opposite end with atension spring 89 and with a grooved roller 90, the latteriengaging a cam 91 fast on shaft 27, said crank arm by its engagement with a notch 92 in-the cam 91, serving to hold said shaft against turning when the crank arms 28 reach the bottom of- '85, rock shaft 84 and crank arm 93), lifts the spring-pressed roller' 94, at which time said roller 94 slides over into the path of scroll cam 95 where said roller 94 is permitted to ride down on the periphery of cam 95 by reason of the high part of wiper cam 87 passing from beneath roller '86, Upon the arrival of roller 94 at the low point of cam 95, the laterally deflected-portion 96 contacts with the side of roller 94 forcing said roller over and keeping it out of the path of the periphery of cam 95 until said roller is again raised by the means described.

It will be observed that wiper cam 87 is stationary while the roller 94 isriding down on cam 95 and allowing rock levers 69 by c means of springs to release shutter 72 and move a display'frame tothe rear of the storage rack. V

The brackets 81 are provided with bearings 97 in which is supporteda shaft 98, and on this shaft is a crank arm 99 having a roller 100 at its free end and heldby a spring 101 against the periphery of a cam 102 fast on shaft 27. Fixed to the outer ends of the shaft 98 are crank arms 103 which are con nected by rods 104 with the rock levers 53 that shift the display frames from'the rear to the front of the machine.

The rock levers 69 when released from cam pressure are drawn by springs 105 'toward the series of display frames on the storage rack and consequently'these frames are forced toward the rear of the machine so as to always have the outermost one in such position that its trunnions will be engaged by the hooks 17 of the carriage so that the frame may .be raised to the transfer rack at the next ascent of the carriage. During the period when the springs 105 are exertingtheir pressure upon the rock levers 69 as just described, the cams 87 and 95 are idle with relation to the crank arms 85 and 93 respectively, but when the timing wheel 16 has been turned to present its shallow notch 48 to the pin 37 so as to couple the sleeve 34 and shaft 27 and cause them to turn jointly, then these cams become operative with relation to their crank arms and the cam 87 acting upon its crank arm 85 so turns the shaft 84L as to move the rock levers 69 toward the front of the machine so as to be in position to support the shutter in its elevated position and to present its lugs 68 in position to receive the trunnions of the frame that has been on display. This movement of the rock shaft 84 lifts the crank arm 93 and holds it out of engagement with its cam 95 until upon the descent of the carriage the high point of cam 95 comes into contact with the said crank arm, and at this time the high point of cam 87 is uppermost and when this high point of cam 87 leaves its crank arm 85 the cam 95 and crank arm 93 support the moving transfer parts while the carriage is at the bottom and then as the cam turns the rock shaft 84 is rocked so as to move the levers 69 toward the rear of the machine, thus releasing the shutter and carrying the previously displayed frame to the rear of the rack. Meanwhile the'crank arm 85 is being moved toward the low point of its cam as is also the crank arm 93 being lowered to the low point of its cam, and when this last is reached, then the deflector element 96 of cam 95 throws the crank arm out of engagement with the cam and allows the springs 105 to hold the rock levers 69 against the series of display frames on the storage rack. Meanwhile the sleeve 34 and shaft 27 have been uncoupled and shaft 27 and the cams thereon are idle;

Thus it will. be seen that the carriage performs no other functions than raising a frame into position to be displayed,'raising the shutter to cover the display opening. and releasing and lowering a displayed frame for transfer back to the storage rack, The other operations are performed by positively actuated transfer mechanism, all under control of a single operating mechanism, as explained.

106 is a trough containing a lubricant in which the worm-wheel 33 turns.

As already sufficiently indicated, the mechanism described is designed to be enclosed in a suitable. casing having an open ing covered by the shutter while the display frame is being moved into display position cooperative relation with the pin 37 onthe disk 35 to couple the sleeve and the shaft 27 so as to give the carriage its ascending movement. The signs or other objects in the display frames may be of transparent or translucent material adapted to be illuminated in any suitable way, as by means of a light arranged within the casing.

The display machine is designed for use in public places, either out of doorsor indoors, and to' be sold outright to exhibitors, or leased, or, especially when arranged out of doors in public places, to have space therein. rented to a number of exhibitors.

Variations in the details of construction and in the arrangement of parts are permissible within the principle of the invention as herein explained and hereinafter claimed.

What I claim is:

1. A display machine,"having a storage rack adapted to receive a'number of display frames, a transfer rack atva different altitude to rcceivesuch frames one by one from the storage rack, a vertically reciprocating carriage provided with means to take the frames one by one from the storage rack and move them to the transfer rack, and positively actuated means to transfer the frame on said transfer rack from the rear of the machine to the front and to place it in display orexhibiting position.

2. A display machine, having a storage rack adapted to receive a number of display frames, a transfer rack at a different altitude to receive such frames one by one from the storage rack, a vertically reciprocating carriage provided with means to take the frames one by one from the storage rack and move them to the transfer rack, positively actuated means to transfer the frame on said transfer rack from the rear of the machine to the front and to place it in display or exhibiting position, and means to displace a previously displayed frame "to. permit another frame to be moved into dis- A play position.

3. A display machine, having a storage rack adapted to receive a number of display frames, a transfer rack above the storage rack to receive such frames one by one from the storage rack, a vertically reciprocating carriage provided with means to take the frames one by one from the storage rack and move them to the transfer rack, positively actuated means to transfer the frame on the'transfer rack from the rear of the machine to the front and to place it in dis play or exhibiting position, a shutter carried by the carriage to conceal the frame while beingplaced in display position, and means to displace the shutter for displaying the frame when so placed.

I 4:. A display machine, having a storage rack adapted .to receive a number of display frames, a transfer rack arranged above the storage rack to receive such frames one by one from the storage rack, a vertically reciprocating carriage provided with means to take the frames one by one from the storage rack and move them to the transfer rack, positively actuated means to transfer the frame on said transfer rack from the rear of the machine to the front and to place it in display or exhibiting position, means to displace a displayed frame to permit another frame to be moved into display position, and means to transfer a displaced frame onto the storage rack.

5. A display machine, having a storage rack adapted to receive a number of display frames, means to receive such frames one by one from said rack, a vertically reciprocating carriage provided with means to take the frames one by one from the rack and move them to the frame-receiving means, positively actuated means to transfer the frame from'the rearof the machine to the front and to place it in; display or exhibiting position, means to displace a. displayed frame to permit another frame to be moved into display position, means to transfer a displaced frame onto the storage rack, and means to exert rearward pressure upon the transfer means 'so as to insure the positioning of the rearmost frame on the rack with relation to the ascending carriage.

6. In a display machine, a vertically reciprocating carriage, a rack provided with a series of display frames arranged in the path of movement of the carriage, means on thecarriage to take the frames from the rack one by one and move them to a distant frame support, rock levers adapted to engage the frame on the carriage and move it on said support into display position and retain it in such position for apredetermined time, an intermittently rotating cam shaft. and arock shaft connected withsaid rock levers and with said camshaft to actuate said rock levers;

7. Ina display machine, a vertically reciprocating carriage, a stationary rack containing a number of display frames, means on said carriage to take the frames one by one and move them into position for trans fer to display position and then recede,

means on said carriage to engage a previously displayed frame and return it tothe level of the rack, and means to transfer the previously displayed frame from the car riage to the rack.

8. In a display machine, a vertically reciprocating carriage, a stationary rack containing a number of display frames, means on said carriage to take the frames one by one and move them into position for trans fer to displayposition and then recede, means on said carriage to engage a previously displayed frame and return it-to the level of the rack, and means to transfer the previously displayed returned frame from the carriage to the rack, said means comprising rock levers, a shaft on which they are mounted, an intermittently rotating cam shaft, and means interposed between the roclr shaft and cam shaft to move and control the rock levers, said rock levers provided with frame-supporting lugst'o receive the returned displayed frame from the car riage.

.9. In a display machine, a vertically reciprocating carriage, a stationary rack containing a number of display frames, means On said carriage to take the frames oneby' one and move them into position for transfer to display position and then recede a shutter for concealing the frame'while being moved into position, means on said carriage to engage a previously displayed frame and re? turn it to the level of the'rack, and means to transfer the previously displayed returned framefrom the carriagefto the rack, said means comprising rock levers, a shaft on which they are mounted, an intermittently rotating cam shaft, means interposed be-- rocating carriage traveling on said uprights past the storage rack and slightlybeyond the level of the transfer rack and having hooks at its rear to engage the trunnions ofithe rearmost display frame on the storage'rack and in the ascent of the carriage to carry the said frame to the transfer rack.

11. A display machine, provided with up rights, a storage rack fixed tosaid u jirights and adapted to receive a vseries ofv display frames having latefally extended trunnions, a transfer rack likewise fixed to the uprights above thel storage rack, a vertically re cip'ro catingcarriage traveling on sald r hts,

past the storage rack and slightly beyondthe level of the transfer rack and having hooks at its rear to engage the trunnionsj'of the rearmost display frame on the storage rack and in the ascent of the carriage to carry the said frame to the transfer rack and deposit it on said transfer rack, said transfer rack having pendant projections and adjacent spring latches between which the trunnions of the display frame are moved by the carriage onto the transfer rack.

12. A display machine, provided with uprights, a storage rack fixed to said uprights and adapted to receive a series of display frames having laterally extended trunnions, a transfer rack likewise fixed to the uprights above the storage rack, a vertically reciproeating carriage traveling on said uprights past the storage rack and slightly beyond the level of the transfer rack and having hooks at its rear to engage the trunnions of the rearmost display frame on the storage rack and in the ascent of the carriage to carry the said frame to the transfer rack and de posit it on said transfer rack, said transfer rack having pendant projections and adjacent spring latches between which the trunnions of the display frame are moved by the carriage onto the transfer rack, and rock levers pivoted to the uprights above the storage rack and extending upwardly above the transfer rack and having a back-andforth sweep so as to be positioned back of the said pendant projections and spring latches and consequently behind the trunnions of the ascending frame and thereafter in the cycle of movements to engage said trunnions and transfer the display frame to the front of the transfer rack for exhibition purposes. i

13. A display machine, provided with uprights, a storage rack fixed to said uprights and adapted to receive a series of display frames having laterally extended trunnions, a transfer rack likewise fixed to the uprights above the storage rack, a vertically reciproeating carriage traveling on said uprights past the storage rack and slightly beyond the level of the transfer rack and having hooks at its rear to engage the trunnions of the rearmost display frame on the storage rack and in the ascent of the carriage to carry the said frame to the transfer rack and deposit it on said transfer rack, said transfer rack pendant projections and'spring latches and consequently behind the trunnions of the ascending frame and thereafter in the cycle of movements to engage said trunnions and transfer the display frame to the front of the transfer rack for exhibition purposes,

spring cam levers mounted on the transfer rack and extending into the path of movement of the frame being transferred, guards 14. A display machine, provided with uprights, a storage rack fixed to said uprights and adapted to receive a series of display frames having laterally extended trunnions, a transfer rack likewise fixed to the uprights above the storage rack, a vertically reciprocating carriage traveling on said uprights 1 past the storage rack and slightly beyond the level of the transfer rack and having books at its rear to engage the trunnions of the rearmost display frame on the storage rack and in the ascent of the carriage to carry the, said frame to the transfer rack and deposit it on said transfer rack, said transfer rack having pendant projections and adjacent spring latches between which the trunnions of the display frame are moved by the carriage onto the transfer rack, and rock levers pivoted to the uprights above the storage rack and extending upwardly above the transfer rack and having a back-and-forth sweep so as to be positioned back of the said pendant projections and spring latches and consequently behind the trunnions of the ascending frame and thereafter in the cycle of movements to engage said trunnions and transfer the display frame to the front 'of the transfer rack for exhibition purposes, spring cam levers mounted on the transfer rack and extending into the path of movement of the frame being transferred, guards over said cam levers, levers pivoted to the transfer rack at the front of the machine and engaged by the cam levers and adapted to support the display frame in display position and to release said display frame upon a recurrence of the ascent of the carriage, said carriage having hooks at its front onto which the released frame drops and by which upon the descent of the carriage said frame is carried down to the storage'rack. having pendant projections and ad acent 15. A display machine, provided with uprlghts, a storage rack fixed to said uprights and adapted to receive a series of display i frames having laterally extended trunnions, a transfer rack likewise fixed t0 the uprights above the storage rack, a vertically reciprocating carriage traveling on said uprights past the storage rack and slightly beyond the level of the transferrack and adapted to take'a display frame from the storage rack and elevate it to the transfer rack, means to move the'frame to the front of the transfer rack, a trip-lever mechanism at the front of the transfer rack on which the display frame is supported during the exhibiting period, and inwardly projecting lugs on the carriage adapted to trip the said mechanism on the ascent of the carriage and thereby release the displayed frame.

16. display machine, provided with uprights, a storage rack fixed to said uprights and adapted to receive a series of display frames having laterally extended trunnions, a transfer rack likewise fixed to the uprights above the storage rack, a vertically reciprocating carriage traveling on said uprights past the storage rack and slightly beyond the level of the transfer rack and adapted to take a display frame from the storage rack and elevate it to the transfer rack, means to move the frame to the front of the transfer rack, a trip-lever mechanism at the front of the transfer rack on which the display frame the ascent of the carriage and thereby release 20 the displayed frame, and hooks on said carriage on which the thus released frame drops and by which it is carried to the storage rack upon the descent of the carriage.

In testimony whereof I have hereunto set 25 my hand this 24th day of September, A. D. 1920. a

OREN F. BALTZLEY.

WVitnesses:

RALPH L. Bovine, HARRIS HEIDWoHL. 

